As of December 31, 2019, the Company had $5.7 billion of debt outstanding, including net premiums and net deferred financing costs, with a weighted-average years to maturity of 4.8 years and a weighted-average interest rate of 4.30%. The following table summarizes the carrying value of debt as of December 31, 2019 and December 31, 2018, and the debt activity for the year ended December 31, 2019 (in thousands):



					Year Ended December 31, 2019
		Balance as of December 31, 2018			Debt Issuances			Repayments, Extinguishment and Assumptions			Accretion and Amortization			Balance as of December 31, 2019
Mortgage notes payable:
	Outstanding balance	$	1,917,132		$	705		$	(388,780	)	$	—		$	1,529,057
	Net premiums ⁽¹⁾	16,077			—			(1,503		)	(7,713		)	6,861
	Deferred costs	(10,552		)	(96		)	615			2,249			(7,784		)
Mortgages notes payable, net		1,922,657			609			(389,668		)	(5,464		)	1,528,134

Corporate bonds:
	Outstanding balance	3,400,000			600,000			(1,150,000		)	—			2,850,000
	Discount ⁽²⁾	(4,115		)	(6,948		)	—			644			(10,419		)
	Deferred costs	(27,276		)	(5,011		)	2,144			4,301			(25,842		)
Corporate bonds, net		3,368,609			588,041			(1,147,856		)	4,945			2,813,739

Convertible debt:
	Outstanding balance	402,500			—			(80,698		)	—			321,802
	Discount ⁽²⁾	(3,909		)	—			391			1,663			(1,855		)
	Deferred costs	(3,708		)	—			372			1,572			(1,764		)
Convertible debt, net		394,883			—			(79,935		)	3,235			318,183

Credit facility:
	Outstanding balance	403,000			1,386,000			(739,000		)	—			1,050,000
	Deferred costs ⁽³⁾	(1,227		)	(4,279		)	—			1,175			(4,331		)
Credit facility, net		401,773			1,381,721			(739,000		)	1,175			1,045,669

Total debt		$	6,087,922		$	1,970,371		$	(2,356,459	)	$	3,891		$	5,705,725



	Encumbered Properties	Gross Carrying Value of Collateralized Properties ⁽¹⁾		Outstanding Balance		Weighted-Average Interest Rate ⁽²⁾			Weighted-Average Years to Maturity ⁽³⁾
Fixed-rate debt	354	$	2,978,246	$	1,514,666	5.05	%		2.8
Variable-rate debt	1	34,320		14,391		4.99	%	⁽⁴⁾	0.6
Total ⁽⁵⁾	355	$	3,012,566	$	1,529,057	5.05	%		2.8

The Company’s mortgage loan agreements generally restrict corporate guarantees and require the maintenance of financial covenants, including maintenance of certain financial ratios (such as debt service coverage ratios and minimum net operating income). The mortgage loan agreements contain no dividend restrictions except in the event of default or when a distribution would drive liquidity below the applicable thresholds. At December 31, 2019, the Company believes that it was in compliance with the financial covenants under the mortgage loan agreements and had no restrictions on the payment of dividends.

On June 6, 2019, the Company received a notice of default from the lender of a non-recourse loan secured by one property, which had an outstanding balance of $19.5 million on the notice date, due to intentional non-payment of amounts due in accordance with the loan documents. On July 2, 2019, a foreclosure sale occurred to settle the mortgage note obligation.

On April 12, 2018, the Company entered into a deed-in-lieu of foreclosure agreement with the lender of a mortgage loan, secured by one property, with an outstanding balance of $16.2 million at the time of default and conveyed all interest in the property to satisfy the mortgage loan.



	Outstanding Balance December 31, 2019		Interest Rate		Maturity Date
2024 Senior Notes	$	500,000	4.600	%	February 6, 2024
2025 Senior Notes	550,000		4.625	%	November 1, 2025
2026 Senior Notes	600,000		4.875	%	June 1, 2026
2027 Senior Notes	600,000		3.950	%	August 15, 2027
2029 Senior Notes	600,000		3.100	%	December 15, 2029
Total balance and weighted-average interest rate	$	2,850,000	4.210	%

The Senior Notes are guaranteed by the General Partner. The OP may redeem all or a part of any series of the Senior Notes at any time, at its option, for the redemption prices set forth in the indenture governing the Senior Notes. If the redemption date is 60 or fewer days prior to the maturity date with respect to the 2025 Senior Notes or is 90 or fewer days prior to the maturity date with respect to the 2024 Senior Notes, the 2026 Senior Notes, the 2027 Senior Notes and the 2029 Senior Notes, the redemption price will equal 100% of the principal amount of the Senior Notes of the applicable series to be redeemed, plus accrued and unpaid interest on the amount being redeemed to, but excluding, the applicable redemption date. The Senior Notes are registered under the Securities Act of 1933, as amended (the “Securities Act”) and are freely transferable.

The indenture governing our Senior Notes requires us to maintain financial ratios which include maintaining (i) a maximum limitation on incurrence of total debt less than or equal to 65% of Total Assets (as defined in the indenture), (ii) maximum limitation on incurrence of secured debt less than or equal to 40% of Total Assets (as defined in the indenture), (iii) a minimum debt service coverage ratio of at least 1.5x and (iv) a minimum unencumbered asset value of at least 150% of the aggregate principal amount of all of the outstanding Unsecured Debt (as defined in the indenture). As of December 31, 2019, the Company believes that it was in compliance with the financial covenants of our Senior Notes based on the covenant limits and calculations in place at that time.

As of December 31, 2019, the Company’s 2020 Convertible Notes had a balance of $321.8 million outstanding, which excludes the carrying value of the conversion options recorded within additional paid-in capital of $12.3 million and the unamortized discount of $1.9 million. The discount will be amortized over the remaining term of 1.0 year. The 2020 Convertible Notes bear interest at an annual rate of 3.75%.

The 2020 Convertible Notes may be converted into cash, shares of the Company’s Common Stock or a combination thereof, in limited circumstances prior to June 15, 2020, and may be converted into such consideration at any time on or after June 15, 2020. As of December 31, 2019, the conversion rate was 66.7249 shares of the Company’s Common Stock per $1,000 principal amount of 2020 Convertible Notes, which reflects adjustments to the initial conversion rate pursuant to the terms of the applicable indenture as a result of cash dividend payments. There were no changes to the terms of the 2020 Convertible Notes during the year ended December 31, 2019 and the Company believes that it was in compliance with the financial covenants pursuant to the indenture governing the 2020 Convertible Notes as of December 31, 2019.

On May 23, 2018, the General Partner, as guarantor, and the OP, as borrower, entered into a credit agreement with Wells Fargo Bank, National Association as administrative agent and other lenders party thereto (the “Credit Agreement”). The Credit Agreement provided for maximum borrowings of $2.9 billion, originally consisting of a $2.0 billion unsecured revolving credit facility (the “Revolving Credit Facility”) and a $900.0 million unsecured term loan facility (the “Credit Facility Term Loan,” together with the Revolving Credit Facility, the “Credit Facility”). Effective December 27, 2019, the Company reduced its Revolving Credit Facility from $2.0 billion to $1.5 billion.

As of December 31, 2019, $150.0 million was outstanding under the Revolving Credit Facility and the full $900.0 million was drawn on the Credit Facility Term Loan. The maximum aggregate dollar amount of letters of credit that may be outstanding at any one time under the Credit Facility is $50.0 million. As of December 31, 2019, letters of credit outstanding were $3.9 million. Subsequent to December 31, 2019, all letters of credit outstanding were terminated.

As discussed in Note 7 – Derivatives and Hedging Activities, on January 24, 2019, the Company entered into interest rate swap agreements with an aggregate $900.0 million notional amount, effective on February 6, 2019 and maturing on January 31, 2023, to hedge interest rate volatility. Due to an improvement in the Company's credit rating during the fourth quarter of 2019, the interest rate spread on the $900.0 million Credit Facility Term Loan was reduced by 25 bps to LIBOR + 1.10%, and beginning on November 1, 2019, the swap agreements effectively fixed the Credit Facility Term Loan interest rate at 3.59%.

The Revolving Credit Facility generally bears interest at an annual rate of London Interbank Offered Rate (“LIBOR”) plus 0.775% to 1.55% or Base Rate plus 0.00% to 0.55% (based upon the General Partner’s then current credit rating). “Base Rate” is defined as the highest of the prime rate, the federal funds rate plus 0.50% or a floating rate based on one month LIBOR plus 1.0%, determined on a daily basis. The Credit Facility Term Loan generally bears interest at an annual rate of LIBOR plus 0.85% to 1.75%, or Base Rate plus 0.00% to 0.75% (based upon the General Partner’s then current credit rating). In addition, the Credit Agreement provides the flexibility for interest rate auctions, pursuant to which, at the Company’s election, the Company may request that lenders make competitive bids to provide revolving loans, which competitive bids may be at pricing levels that differ from the foregoing interest rates.

In the event of default, at the election of a majority of the lenders (or automatically upon a bankruptcy event of default with respect to the OP or the General Partner), the commitments of the lenders under the Credit Facility will terminate, and payment of any unpaid amounts in respect of the Credit Facility will be accelerated. The Revolving Credit Facility terminates on May 23, 2022, unless extended in accordance with the terms of the Credit Agreement. The Credit Agreement provides for two six-month extension options with respect to the Revolving Credit Facility, exercisable at the OP’s election and subject to certain customary conditions, as well as certain customary “amend and extend” provisions. The outstanding Credit Facility Term Loan matures on May 23, 2023. At any time, upon timely notice by the OP and subject to any breakage fees, the OP may prepay borrowings under the Credit Facility (subject to certain limitations applicable to the prepayment of any loans obtained through an interest rate auction, as described above). The OP incurs a facility fee equal to 0.10% to 0.30% per annum (based upon the General Partner’s then current credit rating) multiplied by the commitments (whether or not utilized) in respect of the Revolving Credit Facility. The OP also incurs customary administrative agent, letter of credit issuance, letter of credit fronting, extension and other fees.

The Credit Facility requires restrictions on corporate guarantees, as well as the maintenance of financial covenants, including the maintenance of certain financial ratios (such as specified debt to equity and debt service coverage ratios). The key financial covenants in the Credit Facility, as defined and calculated per the terms of the Credit Agreement, include maintaining (i) a maximum leverage ratio less than or equal to 60%, (ii) a minimum fixed charge coverage ratio of at least 1.5x, (iii) a secured leverage ratio less than or equal to 45%, (iv) a total unencumbered asset value ratio less than or equal to 60% and (v) a minimum unencumbered interest coverage ratio of at least 1.75x. The Company believes that it was in compliance with the financial covenants pursuant to the Credit Agreement and is not restricted from accessing any borrowing availability under the Credit Facility as of December 31, 2019.